Gas-mixture regulator



Oct. 27, 1925- 5 G. wUNscH GAS MIXTURE REGULATOR v Original Filed Feb. 1924 Patented 0a. 27, 1925.

UNITED STATES Gurno wuuscn, or STEGLITZ, nun BERLIIV, Germany, Lssmnon. T0 asxANiA- WERKE A.-G. VORMALS CENTRALWERKSTATT-DESSAU UND CARL unmannermnnnuau, or rnmnmmu, NEAR BERLIN, GERMANY, A CORPORATION-0F Gna- MANY.

GAS-MIXTURE moon-416a.

Original application and February 29; 1924, Serial no; 888,108; Divided and um application-filed February 20, 1925. Serial No. 10,718. i

To '07] whom it may concern:

[to it known that I, GUmo Women, a citizen of the German Empire, residing at :2 Stindestrasse,Steglilz, near Berlin, Gera very slight movement is transmitted from 31 piston 19.

a primary element, for instance such as is usually automat cally efl'ected on the sand element by an instrument, to a secondary controlling or setting element or to a servomotor, whereupon the said secondary element or servomotor effects the required operation.

The present invention relates to a practical application of the devices claimed in the said copending application and shows how the said process and means may be used in connection with gas mixture regulators.

The accompanying drawing illustrates diagrammatically a device for regulating gas mixture according to the invention.

The mixture regulator as illustrated is more particularly intended for regulating air and gas mixtures for "heating and the like, but'also suitable for any other desired purposes. The mixture regulator is in a way a duplication of the gas pressure regulator shown in a copending application Serial No. 10,717, filed Febr. 20, 1925, for b U. S. Letters Patent. It comprises a gas supply pipe 15 and an air supply pipe 16. In the latter is mounted a throttle valve 17 which is connected by a rod 18 to the rod of The piston is movably arranged in a cylinder 20, at the bottom and cover of which open two pipes 21, 22 the two other ends of which are arranged adjacent each other in the manner of a nozzle. Opposite the ends of the pipes 21 and 22 is arranged a nozzle 23 provided at the end of a pipe 25 pivoted about a pin 24. The pipe 25 is. freely rotatable about the pin 24, and

liquid under pressure or compressed gas passes through it. pipe a era of Figures 1-3 of my copending application for Letters 696,103. In the gas and air pipes 15 and 16 are inserted throttling rings 26 or 27, and diaphragms 28 and 29 are actuated by the pressure difi'erencies at those points. To the diaphragms of the differential'pre'ssure devices are connected push rods30 and 31 respectively. The rod 31 engages with the pipe 25 or 1S pivoted to the same, whilst the rod 30 connects the lever 32. Between the lever 32 and the pipe 25 is arranged a'slide block 33 mounted on a rod 34 which can be moved by a handle or the like 35 in the axial direction of the rod. The mixture of gas and air passes through the chamber 36 The working of this device is as follows: As long as the'proportion between the pressure of the gaspassing through the pipe 15 and that of the airpassing through the pipe 16 remain unchanged, and the propor ti on' of mixture is the correct one the device remains in the position shown in the drawing. The nozzle 23 is in the centre above the openings of the pipes 21 and 22 so that the fluid under pressure (it is preferable to use compressed air for the pur pose) w1ll flow in equal parts into the pipes 21 and 22 and consequently the pressure at both sides of the piston 19 will remain the same. When the pressure in the pipe-15 changes for instance becomes greater the gas mixture will get less air. In that case the diaphragm 28 owing to the inserted differential pressure regulators will move to the right. Consequently. the pipe 25 will e turned in the anticlockwise direction about the pin 24 by means of the rod 30, lever 32 and the slide 33, and the nozzle 23 will then be moved further towards the pipe 22, and a greater portion of the compressed air will pass from the nozzle into the pipe 22. Consequently the pressure on the right hand side of the piston 19 will become greater, and the piston will be moved to the It corresponds to the diaphragm 28 to a towards the burner.

Patent Serial No.

left and thus will open to a greater extent reached, the nozzle 23 of the pipe 25 wi' befl again in the centre between the two pipes 21 and 22, and the iston 19 will remain at a standstill. On t e contrary, when the pressure in the pipe 1 5 sinks, the nozzle 23 will be placed .op osite the pipe 21 and thereby will pr uce a closing of the throttle valve 1 The setting of the slide 33' 1s 1 ntended to regulate the ratio of transmission between the two diaphragms in order. thus to be able to set the proportion to be malntalned between the pressures in the pipes and 16,

' ever it will dium escapin without having to change the throttle rings 26 and 27. 4

I wish it to be understood that I have shown and described merely one example of the invention in connection with a certain system of as mixture regulators. Hows evident to those skilled 1n the art that it may be used also in connection with other kinds of such plants without de-v pa-rtin from the spirit of the invention.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim 1s:

1. In a gas mixture regulator in combination pressure pipes carrying the gases to be mixed, a furt er pipe through which flows a medium under pressure, means adapted to move said last mentioned "pipe in opposite directions corresponding to the rising or falling pressure in said pressure pipes and means operated by the said medium escap- 'in from said further ipe and adapted to and movin to be mixed, a further pipe through which flows a medium under pressure such as a compressed as, difierential pressure devices adapt to respond to the pressure fluctuations in said pressure pipes, diaghragms within said differential pressure evices connected with said last mentioned pipe and adapted to move it in opposite irections corresponding to the rising or falllng pressure 1n said pressure plpes and means operated by the said medium escap-,

ing from said further pipe and adapted to eflfect the mixture regulation.

4. In a gas mixture regulator in combination pressure pipes'carrying the gases to be mixed, a further pipe through which flows a medium under pressure, differential.

pressure devices adapted to respond to the pressure fluctuations in said ressure pipes and moving said last mentloned pipe in opposite directions corresponding to the rising or falling ressure in said pressure pipes, an adjusta 1e device arran ed between one diflerential pressure device and said further pipe adapted to enable the ratio between the pressures to be regulated and means operated by the said medium esca ing from said further pipe and adapted to e ect the mixture regulation.

5. In a gas mixture regulator in combination (pressure pipes carrying the gases to be mixe a further pipe through which flows a medium under pressure, differential pressure devices adapted to respond to the pressure fluctuations in said pressure pipes o posite directions corresponding to the rising or falling pressure in said pressure pipes, a pivoted lever connected to the one difierential pressure device, a slide adjustable in the longitudinal direction of the said lever and ads ted to connect the said lever and said furt er pipe and means operated by the said medium' escaping from said further pipe and adapted to effect the mixture regulation.

In testimony whereof I have aflixed my signature.

GUIDO WUNSCH.

as said last mentloned pipe in 

